2019 DB1
2019 DB1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.935 AU and a period of 0.90 yr.
Orbit and dynamics
Between its closest point (0.555 AU) and its farthest (1.315 AU), the heliocentric distance changes by 0.76 AU over every revolution.
One full revolution takes 0.90 yr (330 days), computed from the semi-major axis of 0.935 AU.
The high eccentricity (0.406) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.
A steep inclination of 40.91° carries it well above and below the ecliptic plane.
By the vis-viva equation its orbital speed rises to 47.4 km/s at perihelion and falls to 20 km/s at aphelion.
Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.
Size and surface
No direct size measurement is available; from an absolute magnitude of H = 24.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.
Observation record and orbit quality
Astrometry from 57 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4108 arcseconds.
Condition code U = 8 signals a poorly constrained orbit, so its future path should be treated as provisional.
About these computed values
Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.
Orbital Parameters
Orbit diagram
The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.
3D orbit (interactive)
Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.
Close approaches
Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).
| Date (UTC) | Miss distance | Velocity |
|---|---|---|
| 2028-Mar-02 07:22 | 0.041509 AU 6209627 km |
26.33 km/s |
Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.
